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植物学报（英文版）
植物学报（英文版）

刘春明

月刊

1672-9072

jipb@ibcas.ac.cn

010-62836133，010-62836563

100093

北京香山南辛村20号中科院植物所内

植物学报（英文版）/Journal Journal of Integrative Plant BiologyCSCDCSTPCD北大核心SCI
查看更多>>本学报是植物学综合性学术期刊。国外发行与交换达40多个国家和地区。国际标准A4大16开铜版纸印刷。本学报力争全面反映我国植物科学的最新研究成果，关注国际热点、新的学科生长点、前沿研究课题，重视报道重要的应用基础研究。主要栏目有植物生理生化、植物遗传学和分子生物学、植物生殖生物学、结构植物学、植物化学与资源植物学、植物系统与进化、植物生态学、古植物学的原始研究论文、综述和快讯。
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    How have breeders adapted rice flowering to the growing region?

    Asako KobayashiMao SuganamiHideki YoshidaYoichi Morinaka...
    2736-2753页
    查看更多>>摘要：Flowering time is a crucial rice trait that influ-ences its adaptation to various environments,cropping schedules,and agronomic character-istics.Rice breeders have exploited sponta-neous mutations in heading date genes to reg-ulate the flowering time.In the present study,we investigated how breeders in Fukui Pre-fecture regulated days to heading while devel-oping promising rice varieties.Genome-wide association studies(GWAS)identified Hd1,Hd16,and Hd18 as the major genes controlling days to heading in the population.However,we suspected that this highly bred population might exhibit genomic stratification,which could lead to spurious or false correlations in the GWAS.Thus,we also conducted correlation and partial correlation analyses,which uncovered another key heading date gene,Hd17,that GWAS failed to detect because of its linkage disequilibrium with the major effect gene Hd16.Examination of haplotype frequen-cies across different breeding periods revealed that the early-heading Hd16(Hd16(E))and late-heading Hd17(Hd17(L))were increasingly co-selected in the Hd1 functional population.Va-rieties carrying this Hd16(E)/Hd17(L)combina-tion exhibited days to heading in the range of 70-80,which corresponds to the peak temper-ature and sunshine period and is also optimal for grain quality and yield components in the Fukui environment.The present study high-lights that it is imperative to remain vigilant for Type Ⅰ(false positives)and Type Ⅱ(false neg-atives)errors when performing GWAS on highly bred populations and to implement appropriate countermeasures by accounting for gene-by-gene interactions established through the breeding process.We also discuss the effec-tiveness of Hd16(E),which is not used outside Japan for subtle days to heading control but is widely used in Japan at certain latitudes.
      原文链接:
    • NETL
    • NSTL
    • 万方数据

    The receptor-like cytoplasmic kinase OsBSK1-2 regulates immunity via an HLH/bHLH complex

    Xun WangZhijuan DiaoChang CaoYan Liu...
    2754-2771页
    查看更多>>摘要：Plants need to fine-tune defense responses to maintain a robust but flexible host barrier to var-ious pathogens.Helix-loop-helix/basic helix-loop-helix(HLH/bHLH)complexes play important roles in fine-tuning plant development.However,the function of these genes in plant immunity and how they are regulated remain obscure.Here,we identified an atypical bHLH transcription factor,Oryza sativa(Os)HLH46,that interacts with rice receptor-like cytoplasmic kinase(RLCK)Os BRASSINOSTEROID-SIGNALING KINASE1-2(OsBSK1-2),which plays a key role in rice blast resistance.OsBSK1-2 stabilized OsHLH46 both in vivo and in vitro.In addition,OsHLH46 positively regulates rice blast resistance,which depends on OsBSK1-2.OsHLH46 has no transcriptional acti-vation activity and interacts with a typical bHLH protein,OsbHLH6,which negatively regulates rice blast resistance.OsbHLH6 binds to the promoter of OsWRKY45 and inhibits its expression,while OsHLH46 suppresses the function of OsbHLH6 by blocking its DNA binding and transcriptional in-hibition of OsWRKY45.Consistent with these find-ings,OsWRKY45 was up-regulated in OsHLH46-overexpressing plants.In addition,the oshlh46 mutant overexpressing OsbHLH6 is more suscep-tible to Magnaporthe oryzae than is the wild type,suggesting that OsHLH46 suppresses OsbHLH6-mediated rice blast resistance.Our results not only demonstrated that OsBSK1-2 regulates rice blast resistance via the OsHLH46/OsbHLH6 complex,but also uncovered a new mechanism for plants to fine-tune plant immunity by regulating the HLH/bHLH complex via RLCKs.
      原文链接:
    • NETL
    • NSTL
    • 万方数据